Sunday, September 20, 2015

List of earthquakes in California

List of earthquakes in California

From Wikipedia, the free encyclopedia

Probabilistic seismic hazard map
Earthquakes in California are common occurrences since the state is located on the San Andreas Fault, which cuts across California and forms the tectonic plate boundary between the Pacific and the North American Plate. There are many thousands of small earthquakes per year, most of them so small that they are not felt. California's complex landscape can be attributed to the network of faults that run through the state. The earliest reported earthquake in California was felt in 1769 by the Portola expedition about 30 miles southeast of Los Angeles. [1][2]

Contents

Summary

California has numerous active faults throughout the state which are known to produce large earthquakes. The most active of these is the San Jacinto Fault Zone in Southern California, which has produced large events on a regular basis throughout recent history. The Mendocino Triple Junction located offshore of Northern California is also very active, producing many earthquakes above M6 throughout history.[3] Northern California is also subject to megathrust earthquakes on the Cascadia subduction zone (extending north from Mendocino), such as the 1700 Cascadia earthquake, magnitude of approximately 9. The town of Parkfield in central California is located on a section of the San Andreas Fault that produces an earthquake of about M6 every 20–30 years on average in 1857, 1881, 1901, 1922, 1934, 1966 and 2004.[4]
The largest recorded earthquake in California was the 1857 Fort Tejon earthquake, with an estimated magnitude of 7.9. This earthquake ruptured the San Andreas Fault from Parkfield to Wrightwood, a distance of 225 miles (350 km). The most destructive earthquake to date was the 7.8 magnitude 1906 San Francisco earthquake, when more than 3000 people perished in the earthquake and the fires that followed. The 1906 quake ruptured the northern segment of the San Andreas Fault for 296 miles (477 km), from San Juan Bautista to near Cape Mendocino in the north.[5] More recently, the 1989 Loma Prieta earthquake, which registered 6.9 and affected the San Francisco Bay Area,[6] and the 1994 Northridge earthquake which registered 6.7 and hit the Greater Los Angeles Area,[7] caused widespread damage and deaths in their respective regions.

Earthquakes

Date PTZ Area M
MMI Deaths Coordinates Comments
1812-12-08 07:00 Wrightwood 6.9 MLa VIII 40 34.37°N 117.65°W
[8]
1812-12-21 11:00 Santa Barbara 7.1 MLa VIII 1 34.2°N 119.9°W
[8]
1836-06-10 07:30 San Francisco Bay Area 6.8 MLa VIII
37.8°N 122.2°W
[8]
1838-06
San Francisco Bay Area 7.0 MLa VIII
37.6°N 122.4°W
[8]
1857-01-09 08:24 ParkfieldWrightwood 7.9 Mw IX 1 35.7°N 120.3°W
[8]
1865-10-08 12:46 Santa Cruz Mountains 6.3 MLa VIII
37.2°N 121.9°W
[9]
1868-10-21 07:53 San Francisco Bay Area 6.8 MLa VIII 30 37.7°N 122.1°W
[9]
1872-03-26 02:30 Owens Valley 7.8 Mw X 27 36.7°N 118.1°W
[10]
1892-02-23 23:20 Baja California 7.8 Mw VIII
32.55°N 115.63°W
[11]
1892-04-19 02:50 Vacaville 6.4 MLa IX 1 38.4°N 122.0°W Doublet [12]
1892-04-21 09:43 Winters 6.2 MLa IX
38.5°N 121.9°W Doublet [12]
1899-12-25 04:25 San Jacinto 6.7 Mw IX 6 33.8°N 117.0°W
[13]
1906-04-18 05:12 San Francisco Bay Area 7.7 Mw XI 3,000 37.67°N 122.48°W Tsunami [14]
1915-06-22 19:59 Imperial Valley 5.5 Mw VIII 6 32.8°N 115.50°W Doublet [15]
1915-06-22 20:56 Imperial Valley 5.5 Mw VIII
32.8°N 115.50°W Doublet [15]
1915-11-20 16:42 Baja California 6.9 Mw IX
32.0°N 115.0°W
[16]
1918-04-21 14:32 San Jacinto 6.7 Mw IX 1 33.75°N 117.0°W
[17]
1920-06-21 18:47 Inglewood 4.9 ML VIII
34.0°N 118.5°W
[18]
1922-01-31 05:17 Cape Mendocino 7.3 Ms V
40.7°N 125.55°W
[19]
1923-01-22 01:04 Cape Mendocino 7.2 Ms VIII
40.5°N 124.5°W
[20]
1925-06-29 06:42 Santa Barbara 6.8 Mw IX 13 34.30°N 119.80°W
[21]
1927-11-04 06:50 Santa Barbara County 7.3 Mw VIII
34.7°N 120.8°W Tsunami [22]
1932-06-06 00:44 Cape Mendocino 6.4 Ms VIII 1 40.75°N 124.50°W
[23]
1933-03-10 17:54 Long Beach 6.3 Ms IX 100–140 33.6°N 118.0°W
[24]
1940-05-18 21:36 Imperial Valley 6.9 Mw X 9 32.733°N 115.5°W
[25]
1941-06-30 23:50 Santa Barbara County 5.9 Mw VIII
34.37°N 119.58°W
[26]
1948-12-04 15:43 Desert Hot Springs 6.0 Mw VII
33.93°N 116.38°W
[27]
1952-07-21 04:52 Kern County 7.5 Ms XI 12 35.00°N 119.02°W
[28]
1952-08-22 14:41 Kern County 5.8 Ms VIII 2 35.33°N 118.92°W
[29]
1954-12-21 11:56 Cape Mendocino 6.5 ML VII 1 40.78°N 124.17°W
[30]
1957-03-22 11:44 San Francisco Bay Area 5.3 ML VII 1 37.67°N 122.48°W
[31]
1968-04-08 19:28 Ocotillo Wells 6.5 Mw VII
33.19°N 116.13°W
[32]
1969-10-01 20:56 Santa Rosa 5.6 ML VIII 1 38.47°N 122.69°W Doublet [33]
1969-10-01 22:19 Santa Rosa 5.7 ML VIII
38.46°N 122.69°W Doublet [33]
1971-02-09 06:01 Greater Los Angeles Area 6.5–6.7 Mw XI 65 34.4°N 118.4°W
[34][35]
1978-08-13 15:54 Santa Barbara County 5.8 Mw VII
34.4°N 119.7°W
[36]
1979-08-06 10:05 Santa Clara County 5.8 Ms VII
37.1°N 121.5°W
[37]
1979-10-15 16:16 Imperial Valley 6.5 Mw IX
32.63°N 115.32°W
[38]
1980-01-24 11:00 East Bay 5.8 Mw VII
37.86°N 121.82°W
[39]
1980-05-25 09:33 Mammoth Lakes 6.2 Mw VII
37.59°N 118.85°W Swarm [40]
1980-05-25 12:44 Mammoth Lakes 5.9 Mw VII
37.55°N 118.84°W Swarm [40]
1980-05-27 07:50 Mammoth Lakes 5.8 Mw VI
37.49°N 118.83°W Swarm [40]
1980-11-08 02:27 Cape Mendocino 7.2 Mw VII
41.12°N 124.25°W
[41]
1983-05-02 15:42 Coalinga 6.2 Mw VIII 1 36.23°N 120.31°W
[42]
1984-04-24 13:15 Santa Clara County 6.2 Mw VIII
37.32°N 121.7°W
[43]
1986-07-08 02:20 North Palm Springs 6.2 Mw VII
34.0°N 116.61°W
[44]
1986-07-21 07:42 Chalfant Valley 6.3 Mw VI
37.54°N 118.45°W
[44]
1987-10-01 07:42 Whittier Narrows 5.9 Mw VIII 8 34.06°N 118.08°W
[45]
1987-11-23 17:54 Elmore Desert Ranch 6.1 Mw VI
33.08°N 115.78°W
[46]
1987-11-24 05:15 Superstition Hills 6.5 Mw VII
33.01°N 115.84°W Triggered [46]
1989-08-08 01:13 Santa Cruz Mountains 5.4 ML VII 1 37.13°N 121.95°W
[47]
1989-10-17 17:04 Santa Cruz Mountains 7.2 Mw IX 63 37.04°N 121.88°W Tsunami [48]
1991-06-28 07:43 Sierra Madre 5.7 Mw VII 1 34.26°N 118.00°W
[49]
1992-04-22 21:50 Joshua Tree 6.2 Mw VII
33.96°N 116.32°W
[50]
1992-04-25 11:06 Cape Mendocino 7.2 Mw VIII
40.37°N 124.32°W Tsunami [51]
1992-04-26 00:41 Cape Mendocino 6.5 Mw VIII
40.42°N 124.6°W Triggered [52]
1992-04-26 04:18 Cape Mendocino 6.7 Mw VIII
40.38°N 124.58°W Triggered [53]
1992-06-28 04:57 Landers 7.3 Mw IX 3 34.2°N 116.44°W
[54]
1992-06-28 08:05 Big Bear 6.5 Mw VIII
34.20°N 116.83°W Triggered [55]
1994-01-17 04:30 Greater Los Angeles Area 6.7 Mw IX 60 34.2°N 118.5°W
[56]
1999-10-16 02:46 Hector Mine 7.1 Mw VII
34.59°N 116.27°W
[57]
2000-09-03 01:36 North Bay 5.0 Mw VII
38.38°N 122.41°W
[58]
2003-12-22 11:15 San Simeon 6.6 Mw VIII 2 35.71°N 121.10°W
[59]
2007-10-30 20:04 Alum Rock 5.6 Mw VI
37.43°N 121.77°W
[60]
2008-07-29 11:42 Greater Los Angeles Area 5.5 Mw VI
33.95°N 117.76°W
[61]
2010-01-09 17:27 Cape Mendocino 6.5 Mw VII
40.65°N 124.69°W
[62]
2010-04-04 15:40 Baja California 7.2 Mw VII 2 32.3°N 115.28°W
[63]
2014-08-24 03:20 North Bay 6.0 Mw VIII 1 38.22°N 122.31°W
[64]
Note: Stover & Coffman 1993 uses various seismic scales. MLa is a local magnitude (equivalent to ML) for events that occurred prior to the instrumental period and is based on the area of perceptibility (as presented on isoseismal maps). The list includes events that occurred offshore or in Baja California, Mexico.

See also

References



  • "Earthquake History for California". Info from USGS. Retrieved 2009-03-17.

  • Sources

    External links



  • "Earthquake Facts". data from USGS. Retrieved 2009-03-18.

  • Mendocino Triple Junction Offshore Northern California

  • The Parkfield, California, Earthquake Experiment USGS

  • The Great 1906 San Francisco Earthquake USGS

  • "October 17, 1989 Loma Prieta Earthquake". data from USGS. Retrieved 2009-03-18.

  • "January 17, 1994 Northridge, CA Earthquake". Retrieved 2009-03-18.

  • Stover & Coffman 1993, pp. 72, 100

  • Stover & Coffman 1993, pp. 73, 104

  • Stover & Coffman 1993, pp. 73, 105–107

  • Stover & Coffman 1993, pp. 74, 110

  • Stover & Coffman 1993, pp. 74, 111, 112

  • Stover & Coffman 1993, pp. 74, 113

  • Stover & Coffman 1993, pp. 75, 114, 115

  • Stover & Coffman 1993, pp. 76, 121

  • Stover & Coffman 1993, pp. 76, 121

  • Stover & Coffman 1993, pp. 76, 122

  • Stover & Coffman 1993, pp. 76, 124

  • Stover & Coffman 1993, pp. 77, 124

  • Stover & Coffman 1993, pp. 77, 125

  • Stover & Coffman 1993, pp. 77, 125, 126

  • Stover & Coffman 1993, pp. 77, 128

  • Stover & Coffman 1993, pp. 78, 129, 130

  • Utsu, T. R. (2002), "A List of Deadly Earthquakes in the World: 1500-2000", International Handbook of Earthquake & Engineering Seismology, Part A, Volume 81A (First ed.), Academic Press, p. 705, ISBN 978-0124406520

  • Stover & Coffman 1993, pp. 81, 135, 136

  • Stover & Coffman 1993, pp. 82, 136

  • Stover & Coffman 1993, pp. 84, 141

  • Stover & Coffman 1993, pp. 86, 144

  • Stover & Coffman 1993, pp. 87, 146, 147

  • Stover & Coffman 1993, pp. 88, 148

  • Stover & Coffman 1993, pp. 88, 150

  • Stover & Coffman 1993, pp. 91, 154

  • Stover & Coffman 1993, pp. 91, 156

  • ISC (2014), ISC-GEM Global Instrumental Earthquake Catalogue (1900-2009), Version 1.05, International Seismological Centre

  • SCEDC (2013). "Significant Earthquakes and Faults – San Fernando Earthquake". Southern California Earthquake Data Center.

  • Stover & Coffman 1993, pp. 94, 163

  • Stover & Coffman 1993, pp. 94, 165, 166

  • Stover & Coffman 1993, pp. 94, 166

  • Stover & Coffman 1993, pp. 94, 166, 167

  • Stover & Coffman 1993, pp. 95, 168

  • Stover & Coffman 1993, pp. 95, 168

  • Stover & Coffman 1993, pp. 96, 171–175

  • Stover & Coffman 1993, pp. 97, 175

  • Stover & Coffman 1993, pp. 97, 177

  • Stover & Coffman 1993, pp. 98, 178, 179

  • Stover & Coffman 1993, pp. 98, 179, 180

  • Stover & Coffman 1993, pp. 99, 180

  • Stover & Coffman 1993, pp. 99, 180–186

  • USGS. "M5.7 - Southern California". United States Geological Survey.

  • USGS. "M6.2 - Southern California". United States Geological Survey.

  • USGS. "M7.2 - Northern California". United States Geological Survey.

  • USGS. "M6.5 - offshore Northern California". United States Geological Survey.

  • USGS. "M6.7 - offshore Northern California". United States Geological Survey.

  • USGS. "M7.3 - Southern California". United States Geological Survey.

  • USGS. "M6.5 - Southern California". United States Geological Survey.

  • USGS. "M6.7 - Greater Los Angeles area, California". United States Geological Survey.

  • USGS. "M7.1 - Southern California". United States Geological Survey.

  • USGS. "M5.0 - Northern California". United States Geological Survey.

  • USGS. "M6.6 - Central California". United States Geological Survey.

  • USGS. "M5.6 - San Francisco Bay area, California". United States Geological Survey.

  • USGS. "M5.5 - Greater Los Angeles area, California". United States Geological Survey.

  • USGS. "M6.5 - offshore Northern California". United States Geological Survey.

  • USGS. "M7.2 - Baja California, Mexico". United States Geological Survey.
  • end quote from:
  • https://en.wikipedia.org/wiki/List_of_earthquakes_in_California

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